Automatic shield bender and welder for a filament mounting machine



Dec. 17, 1957 H. P. HASELL 2,816,350

AUTOMATIC SHIELD BENDER AND -WEI .'DER

FOR A FILAMENT MOUNTING MACHINE 7 Sheets-Sheet 1 Filed May 12, 1953 O OO Z0 8 ,0 O o O o 40 O o Z2 0 0 o O o 0 0 o /62 O o 54 on 0/6 0 o 2y #60 6 o o M d o a 0 a e o o 0 33 0 a O o 0 0 0 0 I o 0 0 :7 o a 0 0 00 000 o o o g 0 l 0 0 :0 o o 000 o a 00 0 0 o s a W o INVENTCR E 1. IATTORNEY Dec. 17, 1957 H. P. HASELL 2,816,350

AUTOMATIC SHIELD BENDER AND WELDER FOR A FILAMENT MOUNTING MACHINE FiledMay 12, 1953 7 Sheets-Sheet 2 ATTORNEY Dec. 17, 1957 H. P. HASELL2,816,350

AUTOMATIC SHIELD BENDER AND WELDER FOR A FILAMENT MOUNTING MACHINE FiledMay 12, 1953 '7 Sheets-Sheet 3 nm ccq g5 F M: I I I I] ll'IIIIIIIIIIIIIIIIIIIII J INVENTOR f/. R HHS'ELL.

ATTORN H. P. HASELL AUTOMATIC SHIELD BENDER AND WELDER Dec. 17, 1957 FORA FILAMENT MOUNTING MACHINE 7 Sheets-Sheet 4 Fild May 12, 195:5

. INVENTOR HRH/7552b Q BY 9 ATTORNEY ilk! Dec. -17, 1957 P. HASELL2,816,350

AUTOMATIC ELD BENDER AND WELDER FOR A FILAMENT MOUNTING MACHINE FiledMay 12, 1953 7 Sheets-Sheet 6 25 76. 4 g Z I "F .10 +4 I /O /7 v7 4W M-Z7Z' r 2| 1 INVENTOR H. P. H/YSEZZ.

Dec. 17, 1957 H. P. HASELL AUTOMATIC SHIELD BENDER AND WELDER FOR A FILAMENT MOUNTING MACHINE 7 Sheets-Sheet '7 Filed May 12, 1953 INVENTORF. H/f6'ELL United States Patent fl "ice AUTOMATIC sHl E bD BENDER ANDWELDER F (IR A FILAM-ENT MOUNTING MAGHINE Hiii-y P. Hasell, sdewalls-Gardens; N;J., assigilorto WestinghouseElectric"Corporation;"East Pittsburgh, Pa., 2 corporation-ofPennsylvania Application May-12, 1 953, Serial No.'354,601

5 Claims. (Cl. 29 25.2)

The present invention relates tothe" manufacture of incandescent lampsand, more" particularly; to an'auto mati'c' shield "bender'and' welderfor a sealed'beam lamp automatic mounting machine.

Sealed beam incandescent lamps generally have'a' re flector assemblyhaving a plurality"of""ferrules sealed thereto; and 'leadingdn'conductors brazed toi the 1 inner portions -'of the :sealed ferrulesz Afilament i'simounted on the-upper; ends of the leading-in conductorsfiThe: sea-led beam lamp employed asa -spotlig'htihas, infladdi tion; asmall inverted cup-like filament shield-whichelimi nates strayforeground illumination -by f absorbing the di rect u nrefiected lightfrom the filament.

Inthe'past a filament :has beenmounted on z-the' 'con duetors of thereflector assembly by a filament mountingi machine, such as is disclosedin- U.' S. PatehtPNo.1Q,297 950, issued October 6, 1942; to'J.Flaws,Irkandientitled Filament Mounting Machine. 011 :such- 'a mountingmachine the reflector assembly may be loaded at Sta tion 1, theleading-in conductors positioned at "Station 2, and: the-leadwires-formed to receive -a filamentat Station4. At Station 5 theupper'portiofls'of the new formecl' leading-in cQnductOrs' may betrim'rn'ed and -the upper endsof the"now' trimmed conductors maY -benotched for filament mounting-at Station 6.'- At Statioii' 8 a filamentmay bemeunte'd or clamped'ontheihotchd" conductors. The reflectorassembly with 'a 'filainent mounted thereon is discharged or unloaded ati' tliePsta tion9 or 10. v

The-- filament shiel'd; generally 'an 1 invertedhemisphere or'cup"having a lower" depending mounttng 'le'g is' u'sll'allypositioned 'and'welde'd by hand to the refiector filamefit" assembly.

Hencey it has been" fou nd' advantageous according -tomy invention' 'toprovide 'an' automatic--fila-ti1ehtshield bender and welder for Station9 of such a filament mounting ma'chine' as is disclosedin;"the"above-named patent. 1 I have provided adjacent Station-9 an 'indeita ble'shield holder turret, a shie'ld 'legbending device,"a bentshield transfer device and positione'r whichwill trans= fer the now bentfilament 'shield' into proper alignment with the conductors; and' thefilament mounted ent reflector assembly; In addition; I have alsoprovitle'dan automatic welder which will secure-the p'ositioned fil'amentshild=on a lead-in 'con'du'ctor above"the'= filament.

In its general aspectgthe present invention-has the ob- 2,8163% PatentedDec. 1 7

In th'e 'attaehed d awi gs 1 iii-which "like numerals 1 indicaiteFsiiiiila' parts-throughout the several views;

Figfil is fragmentary plan view "-of-a'fil ament mountin 'g' sta'tieri afila'rn ent shield b'ndifig a'iid welding station at? a dihare-"statiomofan automatic sealed'beain'in carries-sentdamplamentmounting'michinefi z 2 'a'lpl jgw" 0n"- a la f'geri" scale 'than" 1 ofth filament shield'be'fore the automatic bending of th mbilnfitiglg. I s

Fi g.' -3 'is 'a plan View" Qf 'thshield bending" afidjw' elding stationof -my invention 'and 'sliowirig a shield holder m ret, a shield legbending device, a transfer device and'a slrie'ldWeldefl l Fig'k 4 is afront swarms-at view of a' shield holde'r turiet"assembly; V 5 is 'aside elevational "view of the hiel h tu r-re assembly-"of Fig.4,-"-viewed frbmthe" rig'lif'sid of FigL-F-6A'isa fragmentary "side"elevation bf the shield 'is a side 'elevational view of 'an fauto'mat cshi ldj weldrn device of invention in'its' normaljrest bositio'nij Fig:9is' aview similar to'Fig. 8 showinghhe'weldin g'j of th'e novv"bentfilament shield mounting" leg to a leading? in conductorof thereflect'or assembl'y. I Figfl lO is "a vertical sectional view' on alargerfscale'l '57, 8,'and "9 of the 'transfer'devic'e'andtheautomatidzveldirilg' device in positi'onfor We'ldin'g'opt maltio'na'long lines x X of Fig.9 "in'thedirection of the arrows.

Fig. 11 is ahorizontal sectional view of the transfer device and welding.device along the. line XI-X I ,of Fig. 10d in the direction 'ofthe'arrows 'a'ndyshowingilin the dotted lines'the transfer device in anintermediate position of i'tsliorizontal'rotary travel.

XII 'of Fig. 10in the'fdirecti'on of the ,lidwsandshowing'. the weldingjaw closing means andftlieslidiiig'ineans' for said'iia'wsf' I v 1 v Fi.1 3 isf;a view similart'o Fi ;;1'2 a1ongt line XIII of Fig, '10 in the'di'rectioi'i of.fthe'arrfows and showingthe 'piyotingmeans forthewelding jaws. f

Referring to the drawings andparticularly'tq 'Fig-...1,f an'autoni'atiofilament" mounting machineior' a Sealed beam lamp isdesignatedlby the reference numeral 10. Ini Fig. j"1are.'.sh0w n Station8;? the. filamen'timounting (clamping)"station,'IStation 9', thefilament shield .l e'g bendingfand welding statio'n andVSta'tio'ri';10,17;the-dis; chargefs'tatio n. The machine .10comprises-essentially anannular. mounting plate.l12', secured to .apedestal ,14' and a refletor: turret 16 :carrying -.a plurality ofreflector 3 assembly heads 18, for example 10, indexable through aseries of stations by a conventional mechanism (not shown).

Each of the heads 18 comprises essentially a generally U-shapedpositioning bracket 20, which is mounted by means of its lower side tothe turret 16 and provided with a plurality of centralizing fingers 22(three in the present showing of Fig. 1) depending from the upper sideand a reciprocating cam track operated reflector holder 24, shownparticularly in Figs. 8 and 9. It will be understood that at Station 10the discharge station, and Station 1 the parts loading station, thereflector holder 24 is in a lowered position, relatively close to thereflector turret 16. At all other stations the holder 24 is maintainedin its up position by a cam track (not shown) so that a reflectorassembly 26 located therein (by means of a locating slot, not shown)rests against the centralizing fingers 22 of the locating bracket 20.

At Station 9, the filament shield bending and mounting station (Fig. 1)a filament shield holder turret 28 of a shield holder turret assembly isshown afiixed to a base plate 29 of the frame of the machine 10 by meansof a bracket 30 (Figs. 4 and A filament shield leg bender 32 (Figs. 1,6, 6A and 6B) is mounted by means of a bracket 34 (Fig. l) on themounting plate 12. A transfer device 36 (Figs. 1, 7, 7A, and 11) issecured by means of a bracket 38 to the mounting plate 12, adjacent thebending device 32. Above Station 9, the filament shield bending andmounting station, an automatic welding device 40 (Figs. 1, 8, 9, 10, 11,12 and 13) is similarly mounted on the mounting plate 12 by a bracket42.

Filament shield holder turret assembly The shield holder turret assemblyhas a mounting and supporting bracket 44 secured on the turret mountingbracket 30. This bracket 44 is provided with a forward vertical hubportion 46 (Figs. 4 and 5), and a pair of rearward extending mountinglugs 48. A turret table mounting shaft 50 is rotatable within suitableballbearings in the forward hub 46 and carries a ratchet wheel 52 towhich the shield holder turret 28 is fixed by means of screws. The upperportion of the bracket 44 supports a ratchet wheel brake 56 to preventundue spinning of the ratchet wheel 52. This brake 56 comprises a pairof levers or arms 58 suitably pivoted on the upper portion of thebracket 44 and provided with brake inserts 60, carried on theiroperating ends in engagement with the ratchet wheel 52. The desiredfriction between the inserts 60 and the ratchet wheel 52 is secured bymeans of a spring tensioned adjustment screw (Figs. 4 and 5) extendingthrough the brake arms 58.

Turret indexing mechanism An indexing mechanism for the turret 28 has alower operating lever 62 (Fig. 3) provided with, a roller 62 on itsouter end, and is fixed to the lower portion of a lever shaft 64 (Fig.5). A horizontal spring (not shown) extending from the lever 62 to abracket projecting from the bracket 44 maintains said roller 62' inengagement with a cam track 63 (Fig. 1) located about each head 18 onthe reflector turret 16. This shaft 64 (Fig. 5) is rotatable in the lugs48 of the mounting bracket 44. A block 66 on the shaft 64 between thelugs 48 is provided for engagement with an adjustable stop (not shown)carried on the bracket 44 adjacent the block 66 for limiting therotation of the shaft 64.

An upper operating lever 68 (Fig. 3) on the upper end of the shaft 64carries an adjustable link 70 on its outer end. The inner end of thelink 70 rotates on a pin 72 pivotably secured on a hub of a pawl arm 74.This arm 74 in turn is rotatable on the turret shaft 50 between the topof the forward hub 46 of the mounting and supporting bracket 44 and theratchet wheel 52.

The upper end of the pin 72 carries a rotatable pawl 76 (Fig. 4), whichis connected by means of a spring (not shown) to a second pawl (notshown). This second pawl is pivotable on a pin (not shown) extendingfrom the upper portion of the block 44 adjacent the ratchet wheel brake56.

Turret operation It will be understood that during the indexing of ahead 18, for example, from Station 9, the filament shield bending andwelding station, to Station 10, the discharge station (Fig. 1), theroller 62" on the lower operating lever 62 engages the cam track 63(Fig. 1) on the reflector turret 16 and is moved clockwise thereby (whenviewed in Fig. 3) so that the upper lever 68, the adjustable link 70,the pawl arm 74 and hence the spring biased pawl 76, in engagement withthe ratchet wheel 52, are likewise rotated clockwise. This limitedclockwise rotation of the pawl 76 moves the ratchet wheel 52 and hencethe shield holder turret 54 through. a desired number of indexingdegrees in a clockwise direction.

Filament shield holder turret This annular turret 28 is provided with aplurality of shield bending heads or holders 80 (Figs. 1 and 3), forexample 26, in the present showing, which are contoured to receive ashield 81 (Figs. 2 and 2A). A leg bending slot 32 is provided in theturret 28 adjacent each holder 80 for the leg bending operation. Of thetwenty stations on the turret 28 only the leg bending station, thetransfer station and the one or two intermediate stations therebetweenare not available for the loading of shields 81 on the heads 80.Adjacent each slot 82 a guide or 10- cating pin hole 83 (Fig. 3) is alsoprovided in the turret 28 for use as hereinafter explained.

Filament shield bender The bender bracket 34 on which the bender 32 ismounted (Figs. 3, 6 and 6A) carries a slide guide plate 84 and a pair ofvertical mount rods 86 suitably thereabove. These mount rods 36 havetheir upper portions bridged by a top plate 88. This plate 86 supports astationary piston rod 90 of an air or oil cylinder 92 which reciprocatesvertically on the stationary piston rod 90. The reciprocating cylinder92 is provided with a guide 93 in slidable engagement with one of themount rods 86. The lower end of the cylinder 92 carries a slide plate 94which is slidable in the slide plate guide 84 carried by the benderbracket 34. A two-Way or reversing valve (not shown) actuated by a legbender reciprocating cam (not shown) on the main drive shaft (not shown)of the machine 10 actuates and shuts off the oil cylinder 92.

A leg bending head 96 projects from the lower portion of the slide plate94. This head, as shown in Figs. 6. 6A and 6B has a spring biasedcentering rod 98 for holding a filament shield 31 on a head St) at theleg bending station of the shield holder turret 28. A rod-like bender orpunch bar 102 depends from a mounting block 104 which is secured to thefront portion of the bending head 96. This punch bar 102 engages afilament mounting leg 105 (Figs. 2 and 2A) of the shield 81 locatedabove the leg bending slot 82, as hereinafter explained. A verticallocating pin 106 is carried on an arm 163, fixed to the side of the head96. This guide pin 106 engages the locating or guide hole 83 adjacenteach head 80 on the turret 28, as hereinafter explained.

Shield bender operation It will be understood that after a shield 81 ona holder head 80 of the shield holder turret 23 has indexed into the legbending station of the turret 28 (Fig. 1), the cylinder 92'is activatedat a predetermined time in the op erating cycle and slides downwardly onthe piston rod 90. Simultaneously, the slide plate 94 and hence thebending head 96 move-downwardly 1S0 that theguide pin 106 eng g s, theflocatii g hole ssag s efit 'thehlai: meritshield headj80 (Figsfl, '3,-6 anjd'6B)" thus centering th'piinch baif102 ninresptati ine filamentshield leg 105.- Thepur'ichihar'f 102, as shownjinFigf6B, pushesmeagrosaawnttatmi: into the sl 't 82" to form the desired rightangle-'beiid' shown by dotted'lines in- (Fig. 2A) in 'the leg 105.1","rne fiow 'bent shield s then transferred by the hisfe'if devi'c e 36to a reflector assembly "26 po- Sit ibndofi a i'efle cioY asSemBIy headls at Station 9 Transfer device Thetra i1evic e36"(FigS. 7, 7A, 7B,10and '11) mounted onjthe bracket 38 has a mounting and support ing hlocli112 provided with an' axial shaft hole, a hollowlower'portionfoucohtaining "a rotary drive 114 (Fig. 7B )1? neremanrexpiained, and'a pair of upper'mountho sfifor securing therein a pairof vertical mount 1's nigsiw and 7A). A'topPlate 118 (Fig. 7 br'idgestffefup ends of the mount rods 116 and supports therefromianfadjustabledepending stationary cylin der on fi odf120 of anair oroilcylinder'122." This cylinder-1221B"vertically reciprocable on saidpiston'rod 1203 The l'ower e'n'd of thecylinder '122 carries a shaft124, slidable within a bushing 125 in the mounting and supporting block112. The block 112 is rotatable with sata=-nnning-1zs inthe block 1120fthe transfer device 36 brneansofa key. This shaft'124 extendssubstantia'll b elow' the mounting and supporting blocktll2.

The pper-pdnian of the cylinder-122 carries a valve ng" -ari'n'12'5which makes 'contact with'a stroke (bypass) oil-valve126 for diminishingthe oil pfessiire onthe' cylinder 122 during thedownward shield pickupstroltel Rotary Drive The rotary drive 114 (Fig. 7B) hasa stationaryannulai' housing 127 provided with an oil delivery groove andPsecured inthe annular opening in the lower portion of the mounting block 112. Arotary disc or rotor 128 is fiited to the bushing 125 on the shaft 124and provided with a radial blade slot for mounting therein a fiber blade130. This blade 130 is compressioned against the body 127 by means of aspring located in a radial hole beh ind the blade slot in the rotor 128.Below the rotary'drive 114 in the mounting plate 112 an oil drip pan 132(Figs.7 and 7A) is secured-to the outer portions oft'he bushing 125.

A collar '136 (Figs. 7 and 7A) forcarrying a pair of adjustable stops138 for engagement with a stationary stop' plate (not shown) on thevertical portion of the transfer'br'a'cket' 38, is secured about thelower portion of the bushing 125. These adjustable stops 138 limit therotary motion of a transfer head 140 to properly align saidhead,as'hereinafter explained, for the shield pick-up operation and theshield delivery and aligning operation above a reflector assembly 26 atStation 9 of the machine10I Transfer' head Thistransfer head 140 (Figs.7, 7A, 10 and 11') has a body 142 secured to the lower end of thereciprocating theaxia'l vertical reciprocating motion of the transferhead A shield transfer"arm"148 (Figs. 7, 7A, *10-and'11) of 'gefier'alizilike configuration is aflixed'to the left lif fiif fio rti'oiismfthe'body 142 (Fig.7), as by bdlt's. It

is provided with a shield receiving onpickup groove 150 (Fig.7)in"its'-lower 'face, which is contoured -to fita hemispherical shield81; This groove 150 is connected by a suitable passageway to a vacuumpick-up line 152 c);- tendingfr'oinhhe upper-pennant the transfer arm148 to' a suitable *vac'unms stem (notish'o wn). The lowerforwardportioiiof this arm'148 (Figs; 7, 7A and 10) is provided"with "alocating pin' 154 foi' 'eng'agement with a locatingh'ole 83 Figs. 1 arid'6)'inth'e' turret 28 adjacent a shield holder in -thetransfer stationof the turret 28. p

Operation 'of' the trdnsfr" "device It will beunderstood-that'the"shieldtransfer-statiofl of the turret-28-is locatedgone-br-two stations beyondthe shield bendingstation as-measured in 'a countercloclt wise Idirection in Fig. 1t 28 has been indexed; -as hereinbe'foreexplained;-anbil cylinder reciprocating -.-cam- (not' shown on the maindrive shaft of the-machine '10, operatesan adjacentverth calreciprocating two-w'ay or reversing -valve :1 (also not shown), 'sothatoil "is admitted under pressure "-to the cylinder -122-,-thus causingthe doW'riwardmotion of "the oil cylinder 122, the shaft 124'ir'r thebushing125 and the transfer head 140 on the shaft=l24 until the step 144strikes the plateino't ShOWI'Q'OIY'flTI mounting'plate 12 of the machine10' (Figs.--7-, -'7A- and 7B)." Atthe end of thi'sdownwardshield pickupstrokethe' locating pin- 154 on the transfer arm 148 engagesa-locatinghole 83' ('Figs. 6, 6A and' 6B) in the shieldholder-=tur'ret-28; thus' aligning the shield-receiving groove 150- of theshieldtransfer ar m 148 on the now bent *filamentshield-Sljpositibned on ashield holder or head 80 of the turret-26v The ya'cliirmsupplieclthrough-the line 152 holdsthe now behfishield 81 intheshield-receiving groove-150 of the shield tran's fer arm 148w Itwillbeunderstood that (during the downward mo tion of'the cylinder 122)slightly before'the stop144engagesits'stop' plate (notshown), onthe'rnoun'ting' plate 12 ofthe machine 10, the 'valve operating-arm125'' (Fig. 7) carrie'd'by the cylinder 122 'opens thebypass-valve 126an the mounting and supporti'ng block 112 t'odimin ish the oil pressureon said cylinder'12'2; However,-"the cylinderandthe parts attachedthereto possesses 'suflici'ent inertia to travel the remaining distanceof the pickup stroke so that the stop 144 carried "on the body 142 ofthe transfer head 140'rests on its stop 'plat'e* (not shown):

After the pickup of the now 'ben't shield81'has beeii affected, the oilcylinder reciprocating cam (not"show'n on the main drive shaft reversesthe flow of oil (by action of the two-way reversal valve (not shown)) sothat the cylinder 122, the reciprocating shaft' 124 withimthe bushing125 and the trans'ferhe'ad 140 moveupwardly to their normal restposition shown in -Figs." 7 'and 7A This upward motion is limited by theaction ofcyliiide'r head of the oil cylinder 122 engaging the pistonrod-120;

Simultaneously a rotary drive cam (not shown) also oii themain'driveshaft opens another two-way or'reversing valve (not shown) so that oilis admitted to the 'o'il circulating groove in the body 127 (Fig. 7B)and drives the blade and hence the rotor 128 on the bushing 125 and thevertical shaft 124, 90 in a'clockwis'e direction (Fig. 11). At the endof this rotation the transfer-arm 148 carrying the now bent shield 81 isaligned 'above' "a re flector assembly 26 held in a reflector head '18at sen tion 9.

Meanwhile the oil cylinder reciprocating cam (not shown but hereinbeforementioned) again' reverses-"the flow" of oil to the reciprocating oilcylinder122 causing the downward motion thereofuntil'the now bent'sh'ield 81 is aligned above a filament 156 (Fig.- 10) or the re fiectorassembly 26 and thenow bent leg-1050f theshield 81 is properlypositioned Withrespecttoa l'eading incon'-j ductor 'l58ofsaid assembly26. It will be understood that due to the rotation of said headthis"doiiviiifzar'(l t-1th After the shield holder turret liveringmotion of the transfer head 140 is no longer limited by the stop 144carried by the body 142 of the transfor head 140. The bottom portion ofthe cylinder head of the oil cylinder 122 engages the top of the block112 and thus limits this downward delivery motion. After the now bentshield has been aligned with respect to the filament 156 and theconductor 158, the automatic welder 40 welds the mounting leg 105 to theconductor 158.

Automatic welder The welder bracket 42 for the automatic shield welder40 has a vertical slide plate guide 160 (Figs. 8, 9, 10, 11, 12 and 13)and a pair of vertical mount rods 162 carried on the upper portionsthereof. The upper ends of these mount rods 162 are bridged by a topplate 164 from which depends a stationary plunger rod 166 of an oilcylinder 168. This cylinder 168 reciprocates on the plunger rod 166 andis provided with a guide 170, in slidable engagement with one of themount rods 162. The upper portion of the oil cylinder 168 also carries awelding circuit operating arm 172 (Fig. 9) for closing a welding circuitmicroswitch 174 secured to one of the mount rods 162. The switch 174closes a welding circuit (not shown) as hereinafter explained.

A slide bar 176 is pinned to the lower portion of the oil cylinder 168.This slide bar 176 is slidable in a slide plate 178 which in turn slideswithin the stationary slide guide 160 in the welder bracket 42. Theslide plate 178 carries an adjustable stop 179 (Fig. for engagement withthe top surface of the welder bracket 42 to limit the downward travel ofthe slide plate 178.

It will be understood that this slide plate 178 may be provided with atop flange for mounting a pair of spring biased slide rods thereon. Asuitable flange bracket may be carried on the upper end of the oilcylinder 168 for supporting the switch arm 172 and for sliding on theseslide rods. As the oil cylinder 168 descends, the slide rod springs arecompressed and maintain a desirable upward thrust on the oil cylinder168. The bottom portion of the slide plate 178 is provided with anoutwardly extending shaft 188 on which a pair of welding arms 182 arepivoted in scissor-like fashion. The upper ends of the welder arms 182are provided with suitable rollers which ride in the upwardly divergentcam tracks of an expander cam 184 carried on the lower end of the slidebar 176. Each of the welding arms 182 is provided with an electricvoltage supply line (not shown) leading from the welding circuit, ofwhich the micro switch 174 is a part.

Operation of the automatic welder After the delivery stroke of thetransfer device 36 has been completed, a welder cam (not shown) on themain cam shaft of the machine 10 opens a two-way reversing valve (notshown) to admit oil to the cylinder 168 and cause its downward motion onthe plunger rod 166. It will be understood that the slide bar 176 andthe slide plate 178 move downwardly together with the cylinder 168 untilthe stop 179 (Fig. 10) on the plunger plate 178 strikes the uppersurface of the welder bracket 42.

It will be further understood that at this point in the cycle the slideplate 178 and the welding arms 182 carried on the shaft 189 projectingfrom the slide plate 17 8 have ceased their downward motion. However,the slide bar 176 and the expander cam 184 continue their downwardmotion with respect to the slide plate 178 and the rollers on the arms182 ride upwardly in the upwardly diverging cam tracks of the expandercam 184, thus causing the upper ends of the electrode arms 182 todiverge from each other. This divergence of the upper portions of thewelding arms 182 moves the lower or welding jaws 186 of the welding arms182 toward each other until they clamp about a conductor 158 and amounting leg 105 of the shield 81 positioned by the transfer device 36on the leading-in conductor 158 of the reflector assembly 26. It will befurther understood that simultaneously with the clamping action of thewelding jaws 186 that the adjustable micro switch operating arm 172 onthe oil cylinder 168 closes the welding circuit micro switch 174 on themount rod 162 to deliver welding current to the jaws 186.

After the completion of the welding operation the welding jaw cam (notshown) reverses the oil flow to the oil cylinder 168, by means of thetwo-way valve (not shown). The oil cylinder 168, the slide bar 176 andthe expander cam 184 move upwardly, thus opening the welding jaws 186and eventually returning the slide plate 178 and the welding arms 182 totheir normal uppermost rest position. The transfer device 36reciprocates upwardly in a manner hereinbefore explained, and is rotatedin a counterclockwise direction until it comes to rest above thetransfer station of the shield holder turret 28. The reflector assembly26 in the reflector assembly head 18 with the now mounted filamentshield 81 thereon, is indexed from Station 9, the filament shieldbending and welding station, to Station 10, the discharge station, ofthe automatic filament mounting machine 10.

Although a preferred embodiment of my invention has been disclosed, itwill be understood that modifications may be made within the spirit andscope of the invention.

I claim:

1. Apparatus for mounting a filament shield on a leading-in conductor ofa reflector lamp assembly, comprising a movable shield turret adapted tosupport said shield in a desired position, means for forming said shieldwhile supported on said shield turret into a configuration adapted forthe mounting of said shield on said leading-in conductor, means forengaging said formed shield, removing said formed shield from saidshield turret and positioning said formed shield with respect to saidleading-in conductor, means for securing said formed positioned shieldto said leading-in conductor and means for operating said shield turretand the respective means of said apparatus in the proper time relationto each other.

2. Apparatus for mounting a filament shield on a leading-in conductor ofa reflector lamp assembly comprising a shield turret adapted to supportsaid shield in a desired position and indexable from station to station,means for forming said shield while supported on said shield turret intoa configuration adapted for the mounting of said shield on saidleading-in conductor, means for engaging said formed shield, removingsaid formed shield from said shield turret and positioning said formedshield with respect to said leading-in conductor, means for securingsaid formed positioned shield to said leading-in conductor and means foroperating said shield turret and the respective means of said apparatusin the proper time relation to each other.

3. Apparatus for mounting a filament shield provided with a mounting legon a leading-in conductor of a reflector lamp assembly comprising amovable shield turret adapted to support said shield in a desiredposition, means for bending said leg While said shield is supported onsaid shield turret into a configuration adapted for the mounting of saidshield on said leading-in conductor, means for engaging said shield,removing said shield from said shield turret and positioning said bentleg with respect to said leading-in conductor, means for securing saidbent positioned leg to said leading-in conductor and means for operatingsaid shield turret and the respective means of said apparatus in theproper time relation to each other.

4. Apparatus for mounting a filament shield on a leading-in conductor ofa reflector lamp assembly comprising a movable shield turret adapted tosupport said shield in a desired position, means for forming said shieldWhile supported on said shield turret into a configuration adapted forthe mounting of said shield on said leading-in conductor, means forengaging said formed shield, removing said formed shield from saidshield turret and positioning said formed shield with respect to saidleading-in conductor, means for welding said formed positioned shield tosaid leading-in conductor and means for operating said shield turret andthe respective means of said apparatus in the proper time relation toeach other.

5. Apparatus for mounting a filament shield provided with a mounting legon a leading-in conductor of a reflector lamp assembly comprising ashield turret adapted to support said shield in a desired position andindexable from station to station, means for forming said leg while saidshield is supported on said shield turret into a configuration adaptedfor the mounting of said shield on said leading-in conductor, means forengaging said shield,

removing said shield from said shield turret and positioning said formedleg with respect to said leading-in conductor, means for Welding saidformed positioned leg to said leading-in conductor and means foroperating said shield turret and the respective means of said apparatusin the proper time relation to each other.

References Cited in the file of this patent UNITED STATES PATENTS

